# C++ keyword: `not`

From cppreference.com
< cpp‎ | keyword

### Usage

- alternative operators: as an alternative for `!`

### Example

Run this code

    #include <iostream>

    void show(bool z, const char* s, int n)
    {
        const char* r{z ? " true  " : " false "};
        if (n == 0) std::cout << "┌───────────┬─────────┐\n";
        if (n <= 1) std::cout << "│ " <<s<< " │ "<<r<<" │\n";
        if (n == 1) std::cout << "└───────────┴─────────┘\n";
    }

    int main()
    {
        show(not true , "not true ", 0);
        show(not false, "not false", 1);
    }

Output:

    ┌───────────┬─────────┐
    │ not true  │  false  │
    │ not false │  true   │
    └───────────┴─────────┘

### See also

- `and`, `and_eq`
- `bitand`, `bitor`
- `not_eq`
- `or`, `or_eq`
- `xor`, `xor_eq`

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/keyword/not&oldid=175676"